Double Copy Link Between Particle Physics and Gravity Unlocks Black Hole Puzzles

Physicists have identified a new method for investigating the complexities of black holes by utilizing mathematical principles from particle physics. This approach focuses on a mathematical link known as the double copy to study Hawking radiation.

According to a report published May 8, 2026, by Science News, this mathematical connection allows researchers to approach long-standing black hole enigmas from a new angle. The technique provides a way to analyze phenomena that are otherwise difficult to observe.

Black holes are not entirely black, as they emit a faint mist of particles called Hawking radiation. This concept is central to several major puzzles regarding black holes, but the radiation is too faint to be observed directly.

To overcome this obstacle, several teams of physicists are using the double copy as a mathematical translation tool. This tool connects two seemingly distinct camps of fundamental physics theories.

The first camp is the standard model, which describes the physics of subatomic particles. The second is the general theory of relativity, which describes gravity.

By using the double copy, physicists can switch a calculation from one language of physics to another. This process can make complex calculations easier to manage or reveal insights that were previously hidden.

The double copy suggests that many phenomena in general relativity are mathematically equivalent to those of certain particles in the standard model. The key difference is that general relativity involves two copies of a particular part of the equation.

This mathematical relationship was discovered in 2010. In the years following that discovery, it has been developed into a useful tool for understanding a variety of gravitational effects.

Chris White, a theoretical physicist at Queen Mary University of London, noted that the method enables the recycling of existing results to achieve new calculations.

It allows us to calculate things we’ve never been able to calculate before, just by recycling results in a clever way

Chris White